APPARATUS AND METHOD FOR TRANSMISSION MODE DECISION IN MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: An apparatus and a method for deciding a transmission mode in a mobile communication system are provided to implement efficient AMC(Adaptive Modulation and Coding) by determining a predetermined MCS(Modulation and Coding Scheme) level of a terminal through the state information of the terminal. CONSTITUTION: An accumulation and metric calculation unit for high speed(510) outputs a channel estimation value at a high speed mode of a terminal, and an accumulation and metric calculation for low speed(520) outputs a channel estimation value at a low speed mode of the terminal. If the channel estimation value is larger than a critical value at the high speed mode, a metric decision unit(525) estimation the channel estimation value as the channel estimation value at the high speed mode.